New copper complexes of several thiosemicarbazones have been prepared and characterized. All complexes have been prepared by employing Cu (II) acetate hydrate, but analytical and spectroscopical data for the isolated complexes revealed that in most cases a reduction to copper (I) occurred. Cyclopropanation reactions of several olefins by ethyldiazoacetate (EDA) in the presence of catalytic amounts of the complexes were examined. The reported results showed that all complexes are competent catalysts for the cyclopropanation reaction of unactivated olefins. Cyclopropanes were obtained in high yields (up to 97%, TON up to 18,400) with moderate to excellent diastereoselectivities (up to >99%). (C) 2012 Elsevier B. V. All rights reserved.
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Savitribai Phule Pune Univ, Dept Chem, Ganeshkhind Rd, Pune 411007, Maharashtra, IndiaSavitribai Phule Pune Univ, Dept Chem, Ganeshkhind Rd, Pune 411007, Maharashtra, India
Kirtani, Deepti U.
Ghatpande, Niraj S.
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Agharkar Res Inst, Bioprospecting Grp, Gopal Ganesh Agarkar Rd, Pune 411004, Maharashtra, IndiaSavitribai Phule Pune Univ, Dept Chem, Ganeshkhind Rd, Pune 411007, Maharashtra, India
Ghatpande, Niraj S.
Suryavanshi, Komal R.
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Agharkar Res Inst, Bioprospecting Grp, Gopal Ganesh Agarkar Rd, Pune 411004, Maharashtra, IndiaSavitribai Phule Pune Univ, Dept Chem, Ganeshkhind Rd, Pune 411007, Maharashtra, India
Suryavanshi, Komal R.
Kulkarni, Prasad P.
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Agharkar Res Inst, Bioprospecting Grp, Gopal Ganesh Agarkar Rd, Pune 411004, Maharashtra, IndiaSavitribai Phule Pune Univ, Dept Chem, Ganeshkhind Rd, Pune 411007, Maharashtra, India
Kulkarni, Prasad P.
Kumbhar, Anupa A.
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Savitribai Phule Pune Univ, Dept Chem, Ganeshkhind Rd, Pune 411007, Maharashtra, IndiaSavitribai Phule Pune Univ, Dept Chem, Ganeshkhind Rd, Pune 411007, Maharashtra, India